A memorial service to mark the 80th anniversary of the Nanjing Massacre committed by the Japanese military during World War II brought together hundreds of activists and members of the Chinese and other Asian communities on Sunday in San Francisco. Japanese troops captured Nanjing, which was China's capital at the time, on Dec 13, 1937, commencing a slaughter that lasted more than 40 days. "They must give justice to those few people who still survive from the Nanjing Massacre and to the memory of what happened there." "It might be a comfort to the victims and those who sacrificed their lives that the Nanjing Massacre has been etched into the memory of the Chinese people and the world civilization." The Nanjing Massacre was entered onto the UNESCO Memory of the World Register, a compendium aimed at preserving documented heritage of universal value, in 2015.liazhu@chinadailyusa.com